Friend of Tsarnaev brothers charged with obstructing probe of bombing

Rodrique Ngowi / Associated Press

Television journalists stand outside a Quincy, Mass., apartment building where Khairullozhon Matanov, 23, was arrested. He is charged with obstructing the FBI investigation into the Boston Marathon bombings.

Television journalists stand outside a Quincy, Mass., apartment building where Khairullozhon Matanov, 23, was arrested. He is charged with obstructing the FBI investigation into the Boston Marathon bombings. (Rodrique Ngowi / Associated Press)

Television journalists stand outside a Quincy, Mass., apartment building where Khairullozhon Matanov, 23, was arrested. He is charged with obstructing the FBI investigation into the Boston Marathon bombings.